The Bone Doll's Twin is a fantasy novel by American writer Lynn Flewelling, the first in her Tamir Triad.

Now plague and drought stalk the land, war with Skala's ancient rival Plenimar drains the country's lifeblood, and to be born female into the royal line has become a death sentence as the king fights to ensure the succession of his only heir, a son.

For King Erius the greatest threat comes from his own line - and from Illior's faithful, who spread the Oracle's words to a doubting populace.

But unbeknownst to the king or the boy, strange, haunted Tobin is the princess's daughter, given male form by dark magic to protect her until she can claim her rightful destiny.

Only they can protect young Tobin from a king's wrath, a mother's madness, and the terrifying rage of her brother's demon spirit, determined to avenge his stolen life.